Quote:
Originally Posted by Cakes982
Leaving it can cause oil mist to mix in with the air/fuel mixture...it's pretty much only routed that way for emissions.
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You can run a filter midway up the hose to stop some of it. Yoshimura also sells a catch tank that needs to be emptied from time to time.
For the typical rider you'll never notice the 1/2 HP difference doing the PAIR mod accomplishes. I did the PAIR blockoff just so I could get my bike properly dyno-tuned, but I didn't bother doing the rest of the routing for the PAIR "mod".